The sprint review meeting should be held every two weeks in the middle of the sprint. The meeting should only last about 30 minutes, so you don’t waste too much time, but it should include all the major stakeholders, like your team members, product owner, and product manager.
For each week of sprint duration, apply one hour of meeting time for the sprint review. For the retrospective, apply . 75 hours (45 minutes) for each week of sprint duration. For example, a 30-day sprint would result in a four-hour review and a three-hour retrospective.